EP 1174933 A3 20060517 - Complex oxide having high thermoelectric conversion efficiency
Title (en)
Complex oxide having high thermoelectric conversion efficiency
Title (de)
Komplexes Oxid mit hohem thermoelektrischen Umwandlungswirkungsgrad
Title (fr)
Oxyde complexe ayant un rendement de conversion thermoélectrique élevé
Publication
Application
Priority
- JP 2000216819 A 20000718
- JP 2000326260 A 20001026
Abstract (en)
[origin: EP1174933A2] This invention provides a complex oxide comprising the features of : (i) being represented by the formula: (A 0.4 B 0.1 M 0.1 ) x/0.6 Co 2 O y wherein A and B are elements differing from each other, each represents Ca, Sr or Ba, M represents Bi, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb or Lu, 1.7 ‰¦ x ‰¦ 2, and 3.8 ‰¦ y ‰¦ 5, (ii) having a Seebeck coefficient of 100 µV/K or more at a temperature of 100 K (absolute temperature) or higher and (iii) having an electrical resistivity of 10 m©cm or less at a temperature of 100 K (absolute temperature) or higher. The complex oxide of the invention is a material composed of low-toxicity elements existing in large amounts, the material having superior heat resistance and chemical durability and a high thermoelectric conversion efficiency in a temperature range of 600 K or higher which falls in the temperature range of waste heat.
IPC 8 full level
C01G 51/00 (2006.01); H01L 35/14 (2006.01); H01L 35/18 (2006.01); H01L 35/22 (2006.01); H01L 35/34 (2006.01)
CPC (source: EP US)
C03C 3/122 (2013.01 - EP US); C03C 3/15 (2013.01 - EP US); C03C 4/14 (2013.01 - EP US); C03C 10/00 (2013.01 - EP US); H10N 10/851 (2023.02 - EP US); H10N 10/853 (2023.02 - EP US)
Citation (search report)
- [PX] FUNAHASHI R ET AL: "AN OXIDE SINGLE CRYSTAL WITH HIGH THERMOELECTRIC PERFORMANCE IN AIR", JAPANESE JOURNAL OF APPLIED PHYSICS, JAPAN SOCIETY OF APPLIED PHYSICS, TOKYO, JP, vol. 39, no. 11B, PART 2, 15 November 2000 (2000-11-15), pages L1127 - L1129, XP001020524, ISSN: 0021-4922
- [A] FUNAHASHI RYOJI ET AL: "Thermoelectric properties of Bi2Sr2Co2Ox polycrystalline materials", APPLIED PHYSICS LETTERS, AIP, AMERICAN INSTITUTE OF PHYSICS, MELVILLE, NY, US, vol. 76, no. 17, 24 April 2000 (2000-04-24), pages 2385 - 2387, XP012025125, ISSN: 0003-6951
- [A] LI S ET AL: "High temperature thermoelectric properties of oxide Ca9Co12O28", EIGHTEENTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS. PROCEEDINGS, ICT'99 (CAT. NO.99TH8407) IEEE PISCATAWAY, NJ, USA, 1999, pages 581 - 583, XP002372162, ISBN: 0-7803-5451-6
- [A] TERASAKI I ET AL: "Large thermopower in a layered oxide NaCo2O4", SEVENTEENTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS. PROCEEDINGS ICT98 (CAT. NO.98TH8365) IEEE PISCATAWAY, NJ, USA, 1998, pages 567 - 569, XP002372276, ISBN: 0-7803-4907-5
- [PA] LI S ET AL: "THERMOELECTRIC PROPERTIES OF OXIDES CA2CO2O5 WITH BI SUBSTITUTION", JOURNAL OF MATERIALS SCIENCE LETTERS, CHAPMAN AND HALL LTD. LONDON, GB, vol. 19, no. 15, 1 August 2000 (2000-08-01), pages 1339 - 1341, XP001005197, ISSN: 0261-8028
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1174933 A2 20020123; EP 1174933 A3 20060517; EP 1174933 B1 20080716; DE 60039506 D1 20080828; JP 2002100814 A 20020405; JP 3472813 B2 20031202; US 2002037813 A1 20020328; US 2003168641 A1 20030911; US 6544444 B2 20030408; US 6727424 B2 20040427
DOCDB simple family (application)
EP 00127281 A 20001219; DE 60039506 T 20001219; JP 2000326260 A 20001026; US 36480703 A 20030211; US 74160700 A 20001219